.tabbar {
    display: flex;
    position: fixed;
    bottom: 0;
    width: 100%;
    height: 50px;
    line-height: 50px;
    box-sizing: border-box;
    border-top: 1px solid grey;
    .tab {
        width: 20%;
        text-align: center;
    }
    .tab.active {
        color: red;
        font-weight: bold;
    }
}